Potent coatings for stents
First Claim
1. A stent comprising:
- an expandable stent body having a generally tubular shape;
a plurality of support surfaces on said stent body upon which a coating is applied, said coating containing one or more bioactive agents disposed therein, wherein at least one of said bioactive agents is a potent derivative of Tranilast.
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Accused Products
Abstract
A stent having an expandable stent body with a generally tubular shape comprises a series of support surfaces upon which a polymer stent coating has been applied. One or more bioactive agents are disposed within the coating. The coating is applied by evaporating solvent from a solution which has been applied to the stent surfaces from a pressurized reservoir or positive displacement pumping means attached to a delivery tube. The delivery tube'"'"'s longitudinal or X-Y-Z position along the body of the stent, the rotation of the stent along its longitudinal axis, and the delivery rate are coordinated by a programmable controller to deposit precise and repeatable amounts of polymer and agent on the stent surfaces. Preferably, an anti-restenosis agent consisting of a potent analogue or derivative of tranilast are disposed in a bioerodable stent coating, comprising poly(lactic acid), or, alternatively, in a biodurable stent coating comprising EVA.
365 Citations
49 Claims
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1. A stent comprising:
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an expandable stent body having a generally tubular shape;
a plurality of support surfaces on said stent body upon which a coating is applied, said coating containing one or more bioactive agents disposed therein, wherein at least one of said bioactive agents is a potent derivative of Tranilast. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 26)
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- 24. A vascular stent containing a bioactive agent in an amount effective for reduction of restenosis, wherein the bioactive agent comprises one or more of the following related compounds:
- 27. A vascular stent containing a bioactive agent effective for the reduction of restenosis where the bioactive agent is a potent analogue or derivative of tranilast, which selectively controls smooth muscle cell proliferation, while not interfering to any substantial degree with proliferation of endothelial cells.
- 29. A vascular stent having a stent support structure, and containing two biologically active agents in a coating on a surface of the stent support structure, wherein first one of said two agents is present in an effective quantity for control of restenosis, and second one of said two agents comprises an antiplatelet, fibrinolytic, or thrombolytic agent, wherein said antiplatelet, fibrinolytic, or thrombolytic agent, and is released for the same duration as the anti-restenosis agent.
- 31. A fully bioerodable stent which is fabricated by deposition of a mixture of polymer and solvent on a preform, said polymer coating containing one or more bioactive agents.
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41. A method of coating a stent comprising an expandable stent body having a generally tubular shape, said stent body comprising a plurality of outside support surfaces and corresponding inner surfaces, said method comprising:
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applying a polymer coating to said outside support surfaces, said coating including one or more bioactive agents and being applied from a delivery tube coupled to a pressurized source; and
coordinating said tube'"'"'s position along a longitudinal axis of said stent, and rotation of the stent about said longitudinal axis using a programmable controller. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49)
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Specification